Karrimor survival bag the karrimor survival bag is lightweight and compact and is ideal for walkers hikers and backpackers to keep as a safety measure in your rucksack the survival bag is waterproof and thermally insulating to reduce the loss of vital body heat and can also be used as a distress signal thanks to its fluorescent design survival bag waterproof and durable thermally insulating heavy duty polyethylene fluorescent retains body heat 270g orange